Analysis
- max time kernel
147s - max time network
9s - platform
windows7_x64 - resource
win7v20201028 - submitted
08/03/2021, 13:36
General
- Target a603c13e1af6f8696086aca33ad1140c.exe
- Size 626KB
- Sample210308-6dj4kl696e
- SHA256 f28ee29d6e4f2587b8fb1e2c5c85cabd5f2384973ec9273b9e97a00f2c6080c3
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
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Password
browse9ja
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BmHCVzSNFXAS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC2F1.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"C:\Users\Admin\AppData\Local\Temp\a603c13e1af6f8696086aca33ad1140c.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1488-10-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1488-12-0x0000000074BA0000-0x000000007528E000-memory.dmp
memory/1488-13-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1488-15-0x0000000004B50000-0x0000000004B51000-memory.dmp
memory/2008-2-0x0000000074BA0000-0x000000007528E000-memory.dmp
memory/2008-3-0x0000000000A10000-0x0000000000A11000-memory.dmp
memory/2008-5-0x0000000000320000-0x0000000000327000-memory.dmp
memory/2008-6-0x0000000004D80000-0x0000000004D81000-memory.dmp
memory/2008-7-0x0000000000920000-0x000000000097D000-memory.dmp